Spec Clutch SD07A SPEC Aluminum Flywheel - SFI Certified Billet Clutch Flywheel

The SPEC SD07A aluminum clutch flywheel is built from aircraft quality billet aluminum for racing and performance applications that call for a lighter flywheel. SPEC flywheels are CNC manufactured to a .001 tolerance, compared with the industry standard of .010. That precision helps deliver accurate balance and a flat bedding surface for the clutch disc.

Key Features:

• Aircraft quality billet aluminum construction for a light weight option
• CNC manufactured to .001 tolerance for balance and a flat clutch disc surface
• SFI certification, which suits competitive environments
• Rebuildable design with a replaceable steel friction plate
• Friction plate steel is specially formulated for clutch bedding and holding power

Why the flywheel matters: The flywheel is a major factor in clutch performance and life. It gives the clutch disc a consistent, friction-enhancing surface and sets the inertia that affects acceleration and drivability. It must also stay in true balance at rpm. Without dimensional runout, it avoids the vibrations that rob power and damage engines.

SPEC develops flywheel dimensions and weights for many kinds of driving and racing. This helps tune moment of inertia (MOI) for a car's output and performance.